Task: a. List the 3 sub atomic particles
b. Why are atoms electrically neutral despite the fact that they contain charged particles? c. What are isotopes?
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a. protons, electrons, neutrons.
b. because the number of positively charged protons and negatively charged electrons is equal so, the atom is electrically neutral.
c. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
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